B.Com

Both specialization have its own advantage. It depends on student and his interest. Being a commerce graduate,if you are creative and keep good analytical skills, then marketing as a specialization is good option. As you are introvert but have analytical skills,then finance as a specialization can be another option. Finance is not tough for commerce student.

CA/CS/MBA all this one is best .
but in my preference u would have to do MBA.

Are you planning to do or you have already done both?

You should go for B.Com.

you should go for b.com because after this you can try in other streams also like bank preparation etc.

Dear Thumma, courses in finance, financial services, general management, banking and finance would be ideal. No course can guarantee you a good future if you don't have the skillset and don't enjoy your work. So, have a vision of your career and choose whether you want to be in management or handle finance.
Best Wishes

You can do a PG diploma in field of your interest

What is your education qualification?

Try College Dunia website or app
All the Best :-)